This is good advice :) if you're gonna get Wx, get it all from the same place

wxWidgets can be compiled about eleventeen different ways ( with/without unicode, debug, ... ) and any ppm of Wx you might install , is linked to a particular build of Alien::wxWidgets (platform, 32/64-bit, compiler)

So from the aforementioned uk repository, Wx.dll would look for

blib\arch\Alien\wxWidgets\msw_2_8_12_uni_gcc_3_4\lib
...\wxbase28u_gcc_wxp_binary_14_0.dll
...\wxbase28u_net_gcc_wxp_binary_14_0.dll
...\wxbase28u_xml_gcc_wxp_binary_14_0.dll
[download]

msw means microsoft windows, 2.8 or 2.8.12 is wxWidgets version, gcc 3.4 is version of compiler, 28u indicates unicode version of 2.8 wxwidgets